Flora of North America species comparison

1–5, terminal from caudex, erect or nearly so.

erect, arising singly at intervals from slender, elongating, horizontal rhizomes, forming patches.

cauline, ± evenly spaced;

blade widely ovate to elliptic, 1.5–4 cm × 8–22 mm, apex obtuse.

basal and cauline;

cauline ± abruptly more widely spaced;

blade elliptic to spatulate-obovate, apex obtuse;

basal and rosette leaf blades 0.8–2(–2.7) cm × 4–12 mm;

cauline blades 0.5–1.7 cm × 3–8(–12) mm.

solitary flowers or occasionally a terminal pair.

reduced, ± dense cymes, 2–5(–7)-flowered, also often a pair at most of the distal node, rarely solitary flowers.

calyx 8–12 mm, tube cleft to base or nearly so into 2 spathaceous segments, lobes elliptic to ovate-lanceolate, 0.5–5 mm, margins not ciliate;

corolla bright blue, campanulate, open, 30–38 mm, lobes widely ovate-triangular, 6–11 mm, free portions of plicae spreading, low-triangular, less than 1 mm, notched at apex, otherwise entire;

anthers distinct.

calyx 5–7 mm, lobes ascending, lanceolate-triangular, 2–4 mm, margins not ciliate;

corolla greenish blue or greenish yellow, rarely white, tubular, opening narrowly, (8–)12–20 mm, lobes ascending, triangular, 1.8–4 mm, free portions of plicae rounded, minutely erose;

anthers distinct.

not winged.

winged.

 = 24.